Check SNP no position

Identifies SNPs with position equal to zero in the SNP map.

check.snp.no.position(snpmap)

Arguments

snpmap

Data frame with columns `Position` and `Name`.

Value

Character vector with SNP names without position. Returns `NULL` if none.

Author

Roberto Higa

Examples

df <- data.frame(Position = c(0, 100), Name = c("SNP1", "SNP2"))
check.snp.no.position(df)
#> [1] "SNP1"